Intel Core i7-640M vs Core M-5Y31
Comparing Core i7-640M and Core M-5Y31 processor market type (desktop or notebook), architecture and sales start time and price.
Core i7-640M and Core M-5Y31 quantitative parameters such as cores and threads number, clocks, manufacturing process, cache size and multiplier lock state. These parameters indirectly say of Core i7-640M and Core M-5Y31 performance, but for precise assessment you have to consider their test results.
Number of cores
Number of threads
64K (per core)
64K (per core)
256K (per core)
256K (per core)
4 MB (shared)
4 MB (shared)
Manufacturing process technology
Maximum core temperature
64 bit support
Information on Core i7-640M and Core M-5Y31 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one.
Max number of CPUs in a configuration
Power consumption (TDP)
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-640M and Core M-5Y31. You'll probably need this information if you require some particular technology.
Instruction set extensions
Intel® SSE4.1, Intel® SSE4.2
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Enhanced SpeedStep (EIST)
Flex Memory Access
Fast Memory Access
Core i7-640M and Core M-5Y31 technologies aimed at raising security, for example, by protecting against hacks.
Virtual machine speed-up technologies supported by Core i7-640M and Core M-5Y31 are enumerated here.
Types, maximum amount and channel number of RAM supported by Core i7-640M and Core M-5Y31.
Supported memory types
Maximum memory size
Max memory channels
Maximum memory bandwidth
General parameters of GPUs integrated into Core i7-640M and Core M-5Y31.
Intel® HD Graphics for Previous Generation Intel® Processors
Max video memory
Clear Video HD
Graphics max frequency
Available interfaces and connections of Core i7-640M and Core M-5Y31 integrated GPUs.
Number of displays supported
Graphics image quality
Maximum display resolutions supported by Core i7-640M and Core M-5Y31 integrated GPUs, including resolutions over different interfaces.
Max resolution over HDMI 1.4
Max resolution over DisplayPort
Graphics API support
APIs supported by Core i7-640M and Core M-5Y31 integrated GPUs, sometimes API versions are included.
Specifications and connection of peripherals supported by Core i7-640M and Core M-5Y31.
Max number of PCIe lanes
Non-gaming benchmarks performance of Core i7-640M and Core M-5Y31. Overall benchmark performance is measured in points in 0-100 range.
Overall benchmark performance
i7-640M 2.59 +4.9%
i7-640M 3307 +27.7%
Cinebench 10 32-bit single-core
i7-640M 3708 +9.2%
Cinebench 10 32-bit multi-core
i7-640M 7906 +20.5%
Cinebench 11.5 64-bit single-core
M-5Y31 1.09 +2.8%
Cinebench 11.5 64-bit multi-core
i7-640M 2.5 +13.6%
i7-640M 1763 +1%
i7-640M 1 +0%
i7-640M 2067 +4.8%
Let's see how good Core i7-640M and Core M-5Y31 are for gaming compared with game system requirements. Remember that sometimes official requirements may reflect real performance inaccurately.
Advantages of Intel Core i7-640M
4.9% faster in synthetic tests
Higher maximum frequency (3467 vs 2400 MHz)
Enhanced SpeedStep (saves energy by managing CPU frequency and voltage in realtime. Supercedes SpeedStep)
AES (Advanced Encryption Standard instructions set - hardware acceleration of AES encryption and decryption. Speeds up encryption software, e.g. Veracrypt)
x86-64 (a general name for 64-bit extension of x86 instruction set. There are AMD64 and Intel 64 versions that differ very little)
TXT (Trusted Execution Technology - protects the system against viruses and rootkits residing in BIOS or in a boot sector)
vPro (a marketing umbrella term for several Intel technologies: AMT, TXT, EDB, VT, Anti-Theft and some others)
Advantages of Intel Core M-5Y31
Much newer (27 October 2014 vs 1 September 2010)
Finer manufacturing process technology (14 vs 32 nm)
Less power hungry (5 vs 35 watts)
HyperThreading (allows one physical CPU function as two logical ones. It increases performance, since while one logical CPU is waiting for data, the second may still do useful work)
AVX (Advanced Vector Extensions - a set of SIMD instructions working with 128- and 256-bit registers)
AVX2 (Advanced Vector Extensions 2 - an extension to AVX, the set of SIMD instructions working with 128- and 256-bit registers)
Quick Sync (hardware acceleration of video encoding and decoding for Intel CPUs. Speeds up video encoding by times, but at the cost of somewhat lower quality)
Virtualization (Hardware acceleration of virtual machines)
AES-NI (Advanced Encryption Standard New Instructions - additional instructions for hardware acceleration of AES encryption and decryption)
Intel 64 (64-bit Intel CPU architecture. Almost identical to AMD64, except small and rarely used nuances)
So, Core i7-640M or Core M-5Y31?
Technical City couldn't decide between Intel Core i7-640M and Intel Core M-5Y31. The differences in performance seem too small.
Should you still have questions on choice between Core i7-640M and Core M-5Y31, ask them in Comments section, and we shall answer.